Home / 42,747.68-64,122.60-20,253.08

Finding the Fourth Proportional to 42,747.68, 64,122.60 and 20,253.08

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Solution

The fourth proportional to 42,747.68, 64,122.60 and 20,253.08 is: 30,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.68 : 64,122.60 = 20,253.08 : x
  2. Step 2: Convert to fraction form
    42,747.68/64,122.60 = 20,253.08/x
  3. Step 3: Cross multiply
    42,747.68x = 64,122.60 × 20,253.08
  4. Step 4: Simplify right side
    42,747.68x = 1,298,679,827.00
  5. Step 5: Solve for x
    x = 1,298,679,827.00/42,747.68
  6. Step 6: Final answer
    x = 30,380.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.